Answer is A
Just make sure you do know how to do them :)
Answer:
C. Parallelogram and rectangle
Step-by-step explanation:
If it was a square...all the sides would be the same, so it cannot be a square, therefore it is not A or B
We multiplied 11 x 82 ( which was the percentage), based on 100 ppl and their is 11 times as many ppl. 11 x 82 is 902
10/100 = x / (810+x)
1/10 = x / (810 + x)
10x = 810 + x
9x = 810
x = 90 g salt
mass of solution = mass of water + mass of salt
ms = mw + m salt
ms = 810 + 90
ms = 900 g of solution
